Mold



2 Sheets-Sheet 1 F. H. BUNCH Mow Filed April 16, 1941 May 26, 1942.

a M Z w 7 m 7 F Attorney Patented May 26, 1942 UNITED STATES PATENT OFFICE T- MOLD Fredrick H. Bunch, Ottumwa, Iowa Application April 16, 1941, Serial No. 388,845

1 Claim.

This invention relates to molds especially adapted for molding cement or plastic building blocks, and has for the primary object the pro- Vision of a portable device of the above stated character which may be easily and quickly set up for forming cement into hollow building blocks having the usual grooved ends and may be easily and quickly removed from the formed block without disturbing or otherwise damaging the block and will permit a person to manufacture a large number of such blocks within a comparatively short period-of time and at a nominal cost.

With these and other objects in view as will become more apparent as the description proceeds, the invention consists in certain novel features of construction, combination and arrangement of parts which will be hereinafter more fully described and claimed.

For a complete understanding of my invention, reference is to be had to the following description and accompanying drawings, in which Figure 1 is a top plan view illustrating a mold constructed in accordance with my invention.

Figure 2 is a side elevation illustrating the dethe line ing the walls of the device in proper position upon i the base plate. v

Rising vertically andintegral with the top face of the base plate are spaced tapered posts 1, the purpose of which is to form the usual openings in a cement building block. By having the posts 1 tapered towards their unattached ends will facilitate the removal of the device from the block after the latter has set.

Removably mounted on the base plate 5 within the cleats B are side walls 8 and 9 and end walls in and H. The end Wall I 0 is connected to the side wall 8 by hinges I2. The end wall III and side wall 9 are rigidly connected by corner braces I3. Also the end wall II is rigidly connected to the side wall 8 by corner brace I4,

Secured to the inner faces of the walls heretofore mentioned are liner plates l5 preferably constructed of metal and formed on the liner plates carried by the end walls Ill and II are relatively spaced half round ribs l6, the purpose of which is to form the usual end grooves found in a cement building block.

Pairs of guide rods 18 are secured to the base plate 5 and extend through brackets l9 secured on the outerfaces of the end walls It] and II to elongated tubular sleeves, as clearly shown in Figure 4, extending substantially the full height' of the end walls. v

A latch 2| is mounted on the side wall 9 and coacts with a keeper 22 secured on the vertical edge of the end wall H for 'detachably connecting the side wall 9 to said end wall I I. Th latch is of the pivoted spring influenced type having a thumb piece 23 whereby the latch may be readily moved on its pivot by a pressure placed on the finger piece to disengage the latch from its keeper.

In'operation, the variou parts are set up, as

' shown in'Figure 1, and the space occurring within the upstanding walls is filled with cement or other plastic material and after said material has set, the entire device is inverted and placed upon a pallet or other similar support. The latch is then disengaged from the keeper and the walls 9 and .l i] are swung away from the molded article. With the walls'9 and ID in the stated position it is a very simple matter to remove the walls 8 and II endwise away from the molded article without damaging or disturbing said article.

, It is to be understood that when the device is material into the shape of a conventional build- Having thus described my invention, what I 10 claim is:

In a mold, a baseplate, side and end walls removably mounted on said base plate, cleats on said base plate to engage with said walls for centering of the walls on said base plate, vertical tubular guide carried by certain of said walls and extending throughout the height of the walls, and guide rods carried by the base plate and extending freely into the guides, said rods being coextensive with the guides.

FRE'DRICK H. BUNCH. 

